On Dec 4, 2013 Matt Cutts revealed a new official video talk on “stitching content” in context with a question asked by Rajesh of New Delhi,in Webmaster Help Forum.Here is the excerpt of what he asked:

"Hi Matt, Can a site still do well in Google if I copy only a small portion of content from different websites and create my own article by combining all, considering I will mention the source of that content (by giving their urls in the article)? ".

Matt Cutts Video clearly states that copying content snippets from another website to yours is not a good approach. He clears his point by illustrating Yahoo search engine, which considers stitching content as a spam.